Cisco Explorer Series - Page 108

Chapter 9 Troubleshooting
98 734375 Rev H
Symptom
POWER LED
Indicator
Possible Solution
DHCT stuck,
displaying the
following
constantly:

dIAG
Not available
1 Force a download by following these steps:
a Unplug the DHCT power cord from the
power receptacle.
b Plug the DHCT power cord into the
power receptacle while pressing the
SELECT and POWER buttons at the
same time (on the DHCT front panel).
2 If these steps do not work, return the DHCT
to us for repair. Mark the repair tag with D4.
Unit Stuck in dIAG.
DHCT stuck in
brick mode,
displaying the
following
constantly:

---- (four
dashes)
Blinks eight times,
pauses, repeats
1 Follow these steps:
a Confirm that the DHCT MAC address
matches the billing MAC address and
that the DHCT is authorized for service.
b Ask the DNCS operator to correct any
mis-match and send a hit to the DHCT.
2 See PowerKEY/EA Issues (on page 104) for
more information.
3 If these steps do not work, return the DHCT
to us for repair. Mark the repair tag with one
of the following:
– S2. Stays in Brick Mode (----)
– S1. No EMMs/ISE/EA
Front panel LED
displays
for 1
second before the
DHCT reboots
Not available

The Cyclic Redundancy Check verification
on the Bootloader code failed. You might be
able to stage the DHCT, but the DHCT might
not accept an OS upgrade in the future.

Return the DHCT to us for repair. Mark the
repair tag with D7. Error Code (BRXX,
ERXX, or XXXX).
Front panel LED
displays
for 5
seconds before the
DHCT reboots
Not available
The test of the internal DRAM failed:

If the condition was a one-time occurrence,
after rebooting the DHCT, the DHCT boots
correctly into the OS and resident
application.

If this problem continues, the DHCT
reboots continuously and display this
message. Return the DHCT to us for repair.
Mark the repair tag with D7. Error Code
(BRXX, ERXX, or XXXX).